/* ==========================================================================
   UNBOUND(언바운드) 공장보수 — 전용 디자인 시스템
   컨셉: 산업 현장의 견고함 + 기술 도면(블루프린트) + 진단 기록카드
   ========================================================================== */

:root{
  --ink:#12161C;
  --steel-800:#1B2229;
  --steel-700:#262F39;
  --steel-600:#374250;
  --steel-500:#4B5A6B;
  --steel-300:#8B99A8;
  --steel-200:#C5CDD5;

  --bg:#EEF0F2;
  --surface:#FFFFFF;
  --surface-2:#F5F6F8;

  --amber:#E8A33D;
  --amber-dark:#BD8226;
  --amber-light:#FBE6C2;
  --rust:#A6552E;
  --rust-light:#F3DFD3;

  --text:#171A1F;
  --text-soft:#57626D;
  --text-faint:#8A97A3;
  --border:#DCE1E6;
  --border-dark:#33404B;

  --radius:8px;
  --radius-sm:4px;
  --radius-lg:14px;
  --container:1200px;
  --shadow:0 18px 40px rgba(18,22,28,0.14);
  --shadow-sm:0 6px 16px rgba(18,22,28,0.10);

  --font-body:"Pretendard","Noto Sans KR",-apple-system,BlinkMacSystemFont,"Malgun Gothic",sans-serif;
  --font-mono:"JetBrains Mono","Pretendard","Noto Sans KR",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  word-break:keep-all;
  overflow-wrap:break-word;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{line-height:1.35;margin:0 0 14px;font-weight:800;letter-spacing:-0.01em;}
p{margin:0 0 14px;}
button{font-family:inherit;cursor:pointer;}
table{border-collapse:collapse;width:100%;}

.container{max-width:var(--container);margin:0 auto;padding:0 20px;}
.mono{font-family:var(--font-mono);letter-spacing:0.02em;}

/* ---------- Skip / accessibility ---------- */
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:var(--ink);
  border-bottom:1px solid var(--border-dark);
}
.site-header .container{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;gap:20px;
}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand img{width:38px;height:38px;border-radius:9px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{color:#fff;font-size:1.05rem;font-weight:800;}
.brand-text small{color:var(--steel-300);font-size:0.68rem;font-family:var(--font-mono);letter-spacing:0.04em;}

.main-nav{display:flex;gap:2px;flex:1;justify-content:center;}
.main-nav a{
  color:var(--steel-200);font-size:0.88rem;font-weight:600;
  padding:10px 14px;border-radius:6px;transition:background .15s,color .15s;
  white-space:nowrap;
}
.main-nav a:hover,.main-nav a.active{background:var(--steel-700);color:var(--amber);}

.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.header-tel{
  display:flex;align-items:center;gap:7px;color:#fff;font-weight:700;
  font-family:var(--font-mono);font-size:0.92rem;
}
.header-tel svg{width:16px;height:16px;stroke:var(--amber);flex-shrink:0;}
.btn-nav-cta{
  background:var(--amber);color:var(--ink);font-weight:800;font-size:0.85rem;
  padding:10px 16px;border-radius:6px;transition:background .15s;
}
.btn-nav-cta:hover{background:#f5b452;}
.nav-toggle{
  display:none;background:none;border:1px solid var(--border-dark);border-radius:6px;
  width:42px;height:42px;color:#fff;font-size:1.3rem;align-items:center;justify-content:center;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:6px;font-weight:800;font-size:0.98rem;
  border:2px solid transparent;transition:transform .12s,box-shadow .12s,background .12s;
  min-height:52px;
}
.btn:active{transform:translateY(1px);}
.btn-amber{background:var(--amber);color:var(--ink);box-shadow:var(--shadow-sm);}
.btn-amber:hover{background:#f0ae4e;}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,0.55);}
.btn-outline-light:hover{background:rgba(255,255,255,0.1);border-color:#fff;}
.btn-dark{background:var(--ink);color:#fff;}
.btn-dark:hover{background:var(--steel-700);}
.btn-outline-dark{background:transparent;color:var(--ink);border-color:var(--border-dark);}
.btn-outline-dark:hover{background:var(--surface-2);}
.btn-block{width:100%;}
.btn svg{width:19px;height:19px;flex-shrink:0;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:var(--ink);
  color:#fff;
  overflow:hidden;
  padding:56px 0 64px;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.045) 0, rgba(255,255,255,0.045) 1px, transparent 1px, transparent 64px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.045) 0, rgba(255,255,255,0.045) 1px, transparent 1px, transparent 64px);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:6px;
  background:repeating-linear-gradient(-45deg, var(--amber) 0 18px, var(--ink) 18px 36px);
  opacity:.9;
}
.hero .container{position:relative;z-index:1;}
.hero-grid{
  display:grid;grid-template-columns:1.25fr 1fr;gap:48px;align-items:center;
}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:0.74rem;color:var(--amber);
  border:1px solid rgba(232,163,61,0.5);background:rgba(232,163,61,0.08);
  padding:6px 12px;border-radius:20px;margin-bottom:20px;letter-spacing:0.05em;
}
.hero-eyebrow::before{content:"●";font-size:0.6rem;}
.hero h1{
  font-size:clamp(2.4rem,5.2vw,3.6rem);color:#fff;margin-bottom:20px;
}
.hero-lead{
  font-size:1.08rem;color:#D7DDE3;max-width:560px;margin-bottom:28px;
}
.hero-lead strong{color:#fff;}
.hero-btnrow{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:32px;}
.hero-stats{display:flex;gap:0;flex-wrap:wrap;border-top:1px solid var(--border-dark);padding-top:20px;}
.hero-stats div{padding-right:28px;margin-right:28px;border-right:1px solid var(--border-dark);}
.hero-stats div:last-child{border-right:none;margin-right:0;padding-right:0;}
@media(max-width:480px){
  .hero-stats{flex-direction:column;gap:14px;}
  .hero-stats div{border-right:none;margin-right:0;padding-right:0;}
}
.hero-stats strong{display:block;font-size:1.3rem;color:var(--amber);font-family:var(--font-mono);}
.hero-stats span{font-size:0.78rem;color:var(--steel-300);}

.hero-card{
  position:relative;
  background:var(--steel-800);
  border:1px solid var(--border-dark);
  border-radius:var(--radius-lg);
  padding:10px;
  transform:rotate(-1.2deg);
  box-shadow:var(--shadow);
}
.hero-card-photo{position:relative;border-radius:6px;overflow:hidden;aspect-ratio:4/5;}
.hero-card-photo img{width:100%;height:100%;object-fit:cover;}
.hero-card-tag{
  position:absolute;top:12px;left:12px;background:var(--ink);color:var(--amber);
  font-family:var(--font-mono);font-size:0.7rem;padding:5px 10px;border-radius:4px;
  border:1px solid var(--amber-dark);letter-spacing:0.03em;
}
.hero-card-corner{position:absolute;width:22px;height:22px;border:3px solid var(--amber);}
.hero-card-corner.tl{top:8px;left:8px;border-right:none;border-bottom:none;}
.hero-card-corner.br{bottom:8px;right:8px;border-left:none;border-top:none;}
.hero-card-cap{
  padding:12px 8px 6px;font-size:0.85rem;color:var(--steel-200);
}
.hero-card-cap strong{color:#fff;display:block;font-size:0.92rem;margin-bottom:3px;}

@media(max-width:920px){
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-card{transform:none;max-width:340px;margin:0 auto;}
}

/* ---------- Section generic ---------- */
.section{padding:64px 0;}
.section-alt{background:var(--surface);}
.section-dark{background:var(--ink);color:#fff;}
.section-head{max-width:720px;margin:0 0 36px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow-sm{
  font-family:var(--font-mono);font-size:0.74rem;color:var(--amber-dark);
  letter-spacing:0.06em;margin-bottom:10px;display:block;font-weight:700;
}
.section-dark .eyebrow-sm{color:var(--amber);}
.section h2{font-size:clamp(1.5rem,3vw,2.05rem);}
.section-desc{color:var(--text-soft);font-size:1rem;max-width:640px;}
.section-dark .section-desc{color:var(--steel-300);}

/* ---------- Service cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.svc-card{
  background:var(--surface);border:1px solid var(--border);border-top:3px solid var(--amber);
  border-radius:var(--radius-sm);padding:26px 22px;transition:box-shadow .15s,transform .15s;
}
.svc-card:hover{box-shadow:var(--shadow-sm);transform:translateY(-3px);}
.svc-icon{
  width:46px;height:46px;border-radius:8px;background:var(--ink);color:var(--amber);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.svc-icon svg{width:24px;height:24px;}
.svc-card h3{font-size:1.08rem;margin-bottom:8px;}
.svc-card p{font-size:0.9rem;color:var(--text-soft);margin-bottom:14px;}
.svc-card a{font-size:0.85rem;font-weight:700;color:var(--amber-dark);display:inline-flex;align-items:center;gap:4px;}

/* ---------- Photo + text section (image tied to H2) ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;}
.split.reverse .split-media{order:2;}
.split-media{position:relative;}
.split-media figure{margin:0;}
.split-media img{border-radius:var(--radius);width:100%;object-fit:cover;aspect-ratio:4/3;}
.split-media figcaption{
  font-size:0.82rem;color:var(--text-soft);margin-top:10px;
  display:flex;justify-content:space-between;gap:10px;
}
.split-media figcaption .date{font-family:var(--font-mono);color:var(--amber-dark);font-weight:700;}
.split-body h2{margin-bottom:14px;}
.split-body p{color:var(--text-soft);}
.check-list{margin-top:18px;}
.check-list li{
  display:flex;gap:10px;padding:9px 0;border-bottom:1px solid var(--border);font-size:0.94rem;
}
.check-list li:last-child{border-bottom:none;}
.check-list svg{width:19px;height:19px;flex-shrink:0;color:var(--amber-dark);margin-top:1px;}

@media(max-width:860px){
  .split{grid-template-columns:1fr;gap:24px;}
  .split.reverse .split-media{order:0;}
}

/* ---------- Table ---------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius-sm);border:1px solid var(--border);}
.spec-table{min-width:560px;background:var(--surface);}
.spec-table caption{text-align:left;padding:12px 16px;font-size:0.85rem;color:var(--text-soft);background:var(--surface-2);caption-side:top;}
.spec-table th,.spec-table td{padding:13px 16px;text-align:left;font-size:0.92rem;border-bottom:1px solid var(--border);}
.spec-table thead th{background:var(--ink);color:#fff;font-weight:700;font-size:0.85rem;}
.spec-table tbody tr:last-child td{border-bottom:none;}
.spec-table tbody tr:nth-child(even){background:var(--surface-2);}

/* ---------- Process steps ---------- */
.process-rail{display:flex;flex-wrap:wrap;gap:0;counter-reset:step;}
.process-step{
  flex:1 1 150px;position:relative;padding:22px 16px 18px;text-align:center;
  border-right:1px dashed var(--border-dark);
}
.section-dark .process-step{border-right:1px dashed rgba(255,255,255,0.18);}
.process-step:last-child{border-right:none;}
.process-step::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  display:block;font-family:var(--font-mono);color:var(--amber);font-size:1.5rem;font-weight:700;margin-bottom:10px;
}
.process-step h3{font-size:0.95rem;margin-bottom:6px;color:#fff;}
.process-step p{font-size:0.8rem;color:var(--steel-300);margin:0;}
.process-arrow{display:none;}
@media(max-width:760px){
  .process-rail{flex-direction:column;}
  .process-step{border-right:none;border-bottom:1px dashed rgba(255,255,255,0.18);text-align:left;padding-left:0;}
  .process-step:last-child{border-bottom:none;}
}

/* ---------- Before / After ---------- */
.ba-wrap{
  display:grid;grid-template-columns:1fr 1fr;gap:2px;border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.ba-item{position:relative;}
.ba-item img{aspect-ratio:3/4;object-fit:cover;}
.ba-label{
  position:absolute;top:14px;left:14px;font-family:var(--font-mono);font-weight:800;font-size:0.8rem;
  padding:6px 14px;border-radius:4px;letter-spacing:0.06em;
}
.ba-item.before .ba-label{background:var(--rust);color:#fff;}
.ba-item.after .ba-label{background:var(--amber);color:var(--ink);}
.ba-caption{margin-top:14px;color:var(--text-soft);font-size:0.92rem;}
@media(max-width:640px){.ba-wrap{grid-template-columns:1fr;}}

/* ---------- FAQ ---------- */
.faq-list{max-width:800px;margin:0 auto;}
.faq-item{
  border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);
  margin-bottom:10px;overflow:hidden;
}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 20px;font-weight:700;font-size:0.98rem;
  display:flex;justify-content:space-between;align-items:center;gap:14px;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .q-mark{
  font-family:var(--font-mono);color:var(--amber-dark);flex-shrink:0;font-size:1.2rem;transition:transform .2s;
}
.faq-item[open] summary .q-mark{transform:rotate(45deg);}
.faq-item .faq-a{padding:0 20px 20px;color:var(--text-soft);font-size:0.94rem;border-top:1px solid var(--border);padding-top:14px;}
.faq-more-wrap{text-align:center;margin-top:18px;}
#faq-more-list{display:none;}
#faq-more-list.show{display:block;}
#faqMoreBtn.hidden{display:none;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--ink);color:#fff;padding:52px 0;text-align:center;position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(-45deg, rgba(232,163,61,0.05) 0 14px, transparent 14px 28px);
}
.cta-band .container{position:relative;z-index:1;}
.cta-band h2{color:#fff;font-size:clamp(1.4rem,3vw,1.9rem);}
.cta-band p{color:var(--steel-300);margin-bottom:26px;}
.cta-band .btn-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.cta-tel-display{
  font-family:var(--font-mono);font-size:1.5rem;font-weight:800;color:var(--amber);
  margin-top:22px;letter-spacing:0.03em;
}

/* ---------- Footer ---------- */
.site-footer{background:var(--steel-800);color:var(--steel-200);padding:52px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;margin-bottom:32px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand img{width:34px;height:34px;border-radius:8px;}
.footer-brand strong{color:#fff;font-size:1.05rem;}
.site-footer h4{color:#fff;font-size:0.9rem;margin-bottom:14px;}
.site-footer .footer-link{display:block;padding:5px 0;font-size:0.88rem;color:var(--steel-300);}
.site-footer .footer-link:hover{color:var(--amber);}
.footer-desc{font-size:0.88rem;color:var(--steel-300);max-width:340px;}
.footer-biz{
  border-top:1px solid var(--border-dark);padding-top:22px;font-size:0.84rem;color:var(--steel-300);
  line-height:1.9;
}
.footer-biz strong{color:#fff;}
.footer-bottom{
  margin-top:16px;padding-top:16px;border-top:1px solid var(--border-dark);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;font-size:0.78rem;color:var(--text-faint);
}
@media(max-width:760px){.footer-grid{grid-template-columns:1fr;gap:26px;}}

/* ---------- Mobile sticky CTA ---------- */
.sticky-cta{
  display:none;position:fixed;left:0;right:0;bottom:0;z-index:60;
  background:var(--ink);border-top:1px solid var(--border-dark);
  padding:10px;gap:10px;
}
.sticky-cta a{flex:1;}
@media(max-width:760px){.sticky-cta{display:flex;}body{padding-bottom:74px;}}

/* ---------- Mobile nav ---------- */
@media(max-width:920px){
  .main-nav{
    position:fixed;top:72px;left:0;right:0;bottom:0;background:var(--ink);
    flex-direction:column;justify-content:flex-start;align-items:stretch;padding:16px 20px;gap:2px;
    transform:translateX(100%);transition:transform .22s ease;overflow-y:auto;
  }
  .main-nav.open{transform:translateX(0);}
  .main-nav a{padding:15px 12px;font-size:1.02rem;border-bottom:1px solid var(--border-dark);}
  .header-tel{display:none;}
  .nav-toggle{display:flex;}
  .btn-nav-cta{display:none;}
}

/* ---------- Utility ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
@media(max-width:760px){.grid-2{grid-template-columns:1fr;}.card-grid{grid-template-columns:1fr;}}
@media(max-width:1024px) and (min-width:761px){.card-grid{grid-template-columns:repeat(2,1fr);}}
.mt-0{margin-top:0;}
.text-soft{color:var(--text-soft);}
.badge-line{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.badge-line span{
  font-size:0.76rem;font-family:var(--font-mono);border:1px solid var(--border-dark);
  color:var(--steel-300);padding:5px 10px;border-radius:4px;
}
.section-dark .badge-line span{border-color:rgba(255,255,255,0.2);}

.breadcrumb{font-size:0.82rem;color:var(--text-faint);padding:16px 0;}
.breadcrumb a{color:var(--text-soft);}
.breadcrumb a:hover{color:var(--amber-dark);}

.note-box{
  background:var(--surface-2);border-left:3px solid var(--amber);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  padding:16px 18px;font-size:0.88rem;color:var(--text-soft);margin:20px 0;
}

details.faq-item > .faq-a p{margin-bottom:0;}